/Engine/Source/Runtime/Landscape/Classes/LandscapeComponent.h
Create or updates collision component height data
True if CollisionComponent was created in this update.
void UpdateCollisionHeightData ( const [FColor](API\Runtime\Core\Math\FColor) * HeightmapTextureMipData, const [FColor](API\Runtime\Core\Math\FColor) * SimpleCollisionHeightmapTextureData, int32 ComponentX1, int32 ComponentY1, int32 ComponentX2, int32 ComponentY2, bool bUpdateBounds, const [FColor](API\Runtime\Core\Math\FColor) * XYOffsetTextureMipData, bool bInUpdateHeightfieldRegion )